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1 Le Laboratoire des Sciences du Climat et l'Environnement, Orme des Merisiers, Centre de Saclay, 91191 Gif sur Yvette Cedex, France
2 UMR 5805 EPOC, Université Bordeaux I, Avenue des Facultés, 33405 Talence cedex, France
3 Universidad de Barcelona, GRC Geociéncias Marines, Departamente de Estratigrafía, Paleontología y Geociéncias Marines, 08028 Barcelona, Spain
4 Instituto per la Geologia Marina, Via Gobetti 101, 40129 Bologna, Italy
5 UMR 5805 EPOC, Université Bordeaux I, Avenue des Facultés, 33405 Talence cedex, France
6 Department of Earth Sciences, Cardiff University, Park Place, Cardiff CF10 3YE, UK
Multiproxy paleoenvironmental records (pollen and planktonic isotope) from Ocean Drilling Program Site 976 (Alboran Sea) document rapid ocean and climate variations during the last glacial that follow the Dansgaard-Oeschger climate oscillations seen in the Greenland ice core records, thus suggesting a close link of the Mediterranean climate swings with North Atlantic climates. Continental conditions rapidly oscillated through cold-arid and warm-wet conditions in the course of stadial-interstadial climate jumps. At the time of Heinrich events, i.e., maximum meltwater flux to the North Atlantic, western Mediterranean marine microflora and microfauna show rapid cooling correlated with increasing continental dryness. Enhanced aridity conceivably points to prolonged wintertime stability of atmospheric high-pressure systems over the southwestern Mediterranean in conjunction with cooling of the North Atlantic.
Key Words: Mediterranean • paleoenvironments • paleoclimate • last glacial • Heinrich event • aridity
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